del front and add auth

src/main/java/com/krylov/refound/controller/AuthController.java

@@ -0,0 +1,56 @@
+package com.krylov.refound.controller;
+
+import com.krylov.refound.dto.AuthRequest;
+import com.krylov.refound.dto.AuthResponse;
+import com.krylov.refound.dto.RegisterRequest;
+import com.krylov.refound.entity.User;
+import com.krylov.refound.repository.UserRepository;
+import java.util.Map;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/api/v1/auth")
+@Slf4j
+@RequiredArgsConstructor
+public class AuthController {
+
+  private final UserRepository userRepository;
+
+  @PostMapping("/register")
+  public ResponseEntity<?> register(@RequestBody RegisterRequest request) {
+
+    // Проверка что логин не занят
+    if (userRepository.findByLogin(request.getLogin()).isPresent()) {
+      return ResponseEntity
+          .badRequest()
+          .body(Map.of("message", "Логин уже занят"));
+    }
+
+    // Создание пользователя
+    User user = new User();
+    user.setName(request.getName());
+    user.setLogin(request.getLogin());
+    user.setPassword(request.getPassword()); // позже добавить BCrypt
+
+    userRepository.save(user);
+
+    String token = "fake-jwt-token";
+
+    return ResponseEntity.ok(new AuthResponse(token, user));
+  }
+
+  @GetMapping("/check-login")
+  public ResponseEntity<?> checkLogin(@RequestParam String login) {
+    boolean exists = userRepository.existsByLogin(login);
+    return ResponseEntity.ok(Map.of("exists", exists));
+  }
+
+}

src/main/java/com/krylov/refound/controller/ChatController.java

@@ -24,7 +24,7 @@ public class ChatController {
   @MessageMapping("/chat")
   public void send(@Payload ChatMessage message, Principal principal) {
 
-    Optional<User> sender = userRepository.findByEmail(principal.getName());
+    Optional<User> sender = userRepository.findByLogin(principal.getName());
     Message saved = new Message();
     if(sender.isPresent()){
       saved = service.send(message.getReceiverId(), message.getContent());